Steam sprayer



Nov. 28, 1933. F- EWING 1,936,591

STEAM SPRAYER Filed Dec. 3, 1929 5 Sheets-Sheet 2 Nov. 28, 1933. F. EWING ,936,591

STEAM SPRAYER Filed Dec. 3, 1929 3 Sheets-Shelf(l 3' Patented Nov. 28, 1933 Ai-JNITED s'rn'rlzs PAT ENT AoI-Ficlaz 2 Claims.

The present invention is directed to improvements in steam sprayer.

The primary object of the invention is to provide a device of this character so constructed that steam can be generated in a comparatively short time and, further, to provide a device of this character wherein the steam may be generated in a dry condition or may be used wet, as desired.

Another object of the invention is to provide a device of this character so constructed that a cleansing agent can be mixed with the steam or hot water for any purpose desired.

Another object of the invention is to provide a device of this character wherein the steam generating coils are so arranged that they will be subjected to heat from a gaseous burner so that water` passing into the coils will be quickly converted into steam.

Another object of the invention is to provide a device of this character wherein the flow of iiuid,.whether steam or water, can be conveniently regulated` With these and other objects in view, this invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the ,accompanying drawings, in which:

Figure 1 is a side elevation of the device.

Figure 2 is a vertical sectional View through the same.

Figure 3 is a sectional View on the Figure 1.

Figure 4 is a plan view of the coils.

Figure 5 is a horizontal section of the burner on the line 5-5 of Fig. 2.

Referring to the drawings, l designates a base upon which is supported a sheet metal casingl 2,

, said casing being lined with sheet asbestos 3. A top 4 is removably mounted upon the casing and has a thimble 5 carried thereby for engagement with a pipe (not shown) for permitting the escape of burnt gases from the casing.

A burner 6 is provided and is of cruciform shape, the branches thereof having burner tubes 7 connected therewith and inclined inwardly. Gas is conducted to the burner through the supply pipe 8, there being a pilot burner 9 connected with the pipe 8, which may constantly burn in order that the gas may be ignited at any time.

A discharge pipe 10 extends through the upper end of the casing and upon one end is mounted a pressure relief valve 11, the other end of the line 3 3 of pipe being adapted to have secured thereto a hose or other connection in order that the uid may be carried to a point of use.

A substantially U-shaped frame 12 is provided and has the upper ends of its side arms welded or otherwise secured to the pipe 10. `Supported by the frame is a continuous pipe 13 bent to form outer and inner coils 14 and 15, respectively, and an intermediate coil 16, the terminal 17 of the outer coil being connected with the discharge pipe i0.

The inner coil terminates in a leg 18-at its lower end which is connected with a pipe 19 provided with a valve 21. The lower helix of thev outer coil 14 is connected with a pipe 20, having a valve 22, by a pipe 21', the'purpose of which will later appear.

The pipes 19 and 20 connect with a pipe assembly 23 to which water is conducted through the pipe 24 leading from the street main or other source of supply.

Supported adjacent the casing 2'is a tank 25 which is connectedat its upper end with the pipe 10 by a pipe 26 having -a check valve 27 therein.l The check va'lve 27 opens` inwardly so as to permit steam from the coils to enter the detergent tank through the pipe 26 for the purpose of agitating and heating the liquid 'in the detergent tank prior to its delivery to the discharge pipe. rIfhe lower end of the tank has leading therefrom an outlet pipe 28, the upper end of which connects with the pipe 10, there being a valve 29 mounted in said pipe 28 for controlling the flow of fluid therethrough.

Leading from the bottom of the tank 25 and connected vwith the pipe assembly 23, is a pipe connection 30 having a valve 31. A plug 32 is carried by the bottom of the tank to permit draining thereof when desired.

The tank is provided with a filling cap 33 so that soap solution or other suitable cleansing agents or liquid detergents may be introduced therein to be conducted with either steam or water through the pipe 10 to its point of use. The tank 25 is iirmly supported by the brace connection 34 which extends between the lower 1 end of said tank and the casing 2.

The base 1 is preferably supported by legs 35 so that the casing will be supported to permit air to enter the biuner tubes 7.

When it is desired to generate dry steam, the 1 valves 22, 29 and 31 are closed and the valve 21 opened, whereupon water in proper quantity Will flow through the pipe 19 into the inner coil 15 and then downwardly throughthe intermedilI-oso iv ate coil 16, and due to the heat generated by the burner the Water Will be converted into steam which will pass into the outer coil and from the terminal 17 into the discharge pipe 10, to be used for any purpose desired. Should the coils become overheated or it be desired to produce Wet steam, the valve 22 is opened so that Water may enter the outer coil through the pipe 21 and mix with the steam generated in the coils 15 and 16, the entrance of cold water causing the temperature of the coils to at once drop. When it is desired to heat Water only, the supply can be regulated by adjusting the valves so that the Water flowing through the coils will be of such volume as to be heated Without generating steam. The detergent tank is filled at the point 33 after the cap is removed, as will be understood. As the tank fills with uid the air passes out through the same opening and the check valve 27 prevents the uid passing up through the pipe 26 to the discharge pipe 10. When the valve 31 is open, Water ovvs into the tank and the pressure closes the check valve 27, the fluid being forced out through the valve 29 which is now open and through the pipe 28 to the outlet. When the valve 31 is open and the valve 29 is closed, the upward pressure closes the check valve 27 and the steam passes` directly out through the discharge pipe l0, but hot steam alone is not suitable for all purposes so the operator desires to reduce its temperature and add some water and detergent. For this purpose, the valves 3l and 29 are opened and the pressure Vfrom the Water entering through the valve 3l passes out through the pipe 28 and the valve 29 and relieves the pressure below the check valve 27 so that steam then enters the detergent tank at the top and heats and agitates the detergent and mixes the same With the Water entering through the Valve 31. The combined pressure of the steam entering through the pipe 26 and the Water entering through the valve 31 forces the mixture from the tank through the pipe 28 and the flow may be regulated by properly adjusting the valve 29. The mixture passing through the pipe 28 enters the pipe 10 and there mixes with the steam coming from the heating coils. The Water entering the tank through the valve 31 is cool and the operator, by adjusting the valves 31 and 29, can regulate the quantity of steam permitted to enter through the check valve 27 and thus temper the detergent mixture at will.

The device is constructed in such manner that it can be used for various purposes, such for instance, as generating steam for sterilizing bottles, or impregnating steam or Water with a cleansing agent so that the uid can be used for cleansing automobiles or other machines. Also, steam can be produced which will contain considerable moisture so that the device can be used for removing paper from Walls.

From the foregoing, it is thought that the operation and many advantages of the herein described invention Will be apparent to those skilled in the art Without further description, and it will be understood that various changes in size, shape, proportions and minor details of construction may be resorted to Without departing from the spirit or sacricing any of the advantages of the invention.

What is claimed is:

1. A device of the class described comprising heating coils, a closed tank to contain a detergent solution,` a discharge pipe connected with the upper end of the coils, a pipe connecting the discharge pipe and the top of the closed tank, an inwardly opening check valve in said pipe for preventing flow from the tank, means connecting the discharge pipe and the lower end of thetank to conduct uid from the tank to the discharge pipe in advance of the valve pipe, means for supplying water to the coils, means for heating the coils, and means for supplying Water to the bottom of the tank.

2. A device of the class described comprising a steam generator, a discharge pipe leading therefrom, a closed tank to contain a liquid detergent, a pipe connecting the generator and tank, an inwardly opening check valve in said pipe preventing I'loW from the tank through the pipe, means for supplying Water to the tank, and a pipe connection between the lower portion of the tank and the discharge pipe, said pipe connection being disposed in advance of the valved pipe and independent thereof. i

FRED EWING. [L s.] 

